Ezra 3:2

3:2 Then Jeshua the son of Jozadak and his priestly colleagues and Zerubbabel son of Shealtiel and his colleagues started to build the altar of the God of Israel so they could offer burnt offerings on it as required by the law of Moses the man of God.

Ezra 4:2

4:2 they came to Zerubbabel and the leaders and said to them, “Let us help you build, for like you we seek your God and we have been sacrificing to him from the time of King Esarhaddon of Assyria, who brought us here.”